--- a/inst/lombcoeff.m
+++ b/inst/lombcoeff.m
@@ -22,19 +22,29 @@
 ## @seealso{lombnormcoeff}
 ## @end deftypefn
 
-%!test
-%!shared t, x, o, maxfreq;
-%! maxfreq = 4 / ( 2 * pi );
-%! t = linspace(0,8);
-%! x = ( 2.*sin(maxfreq.*t) + 3.*sin((3/4)*maxfreq.*t) - 0.5 .* sin((1/4)*maxfreq.*t) - 0.2 .* cos(maxfreq .* t) + cos((1/4)*maxfreq.*t));
-%! o = [ maxfreq , 3 / 4 * maxfreq , 1 / 4 * maxfreq ];
-%!assert( lombcoeff(t,x,maxfreq),10788.9848389923,5e-10 );
-%!assert( lombcoeff(t,x,3/4*maxfreq),12352.6413413457,5e-10 );
-%!assert( lombcoeff(t,x,1/4*maxfreq),13673.4098969780,5e-10 );
+
+function coeff = lombcoeff (T, X, o)
+
+  theta = atan2 (sum (sin (2 .* o .* T )), 
+                 sum (cos (2 .* o .* T))) / (2 * o);
+
+  coeff = (sum (X .* cos (o .* T - theta)) ^2 / 
+           sum (cos (o .* T - theta) .^2) + 
+           sum (X .* sin (o .* T - theta)) ^2 / 
+           sum (sin (o .* T - theta) .^2));
+
+endfunction
 
 
-function coeff = lombcoeff(T, X, o)
-  theta = atan2(sum(sin(2 .* o .* T )), sum(cos(2.*o.*T)))/ (2 * o );
-  coeff = ( sum(X .* cos(o .* T - theta))**2)/(sum(cos(o.*T-theta).**2)) + ( sum(X .* sin(o .* T - theta))**2)/(sum(sin(o.*T-theta).**2));
-endfunction
-
+%!shared t, x, o, maxfreq
+%! maxfreq = 4 / (2 * pi);
+%! t = linspace (0, 8);
+%! x = (2 .* sin (maxfreq .* t) + 
+%!      3 .* sin ((3/4) * maxfreq .* t) - 
+%!      0.5 .* sin ((1/4) * maxfreq .* t) - 
+%!      0.2 .* cos (maxfreq .* t) + 
+%!      cos ((1/4) * maxfreq .* t));
+%! o = [maxfreq , (3/4 * maxfreq) , (1/4 * maxfreq)];
+%!assert (lombcoeff (t, x, maxfreq), 10788.9848389923, 5e-10);
+%!assert (lombcoeff (t, x, 3/4*maxfreq), 12352.6413413457, 5e-10);
+%!assert (lombcoeff (t, x, 1/4*maxfreq), 13673.4098969780, 5e-10);